RadCartesianChartView visualizes each data point from the BarSeries as a rectangle. These rectangles (or bars) can be displayed either horizontally, or vertically, depending on whether the CategoricalAxis is the vertical axis or the horizontal. When the horizontal axis is categorical, the rectangles are displayed vertically. This means that they have equal width while their height represents the numerical value of each of the data points. On the other hand, when the vertical axis is categorical, the rectangles have equal height, while their width represents the value of the data point. The BarSeries extend CategoricalSeries and require one CategoricalAxis and one LinearAxis.

The bars that are used to represent the data points in BarSeries can have their corners rounded. This can be achieved by using the setAreBarsRounded(boolean) method. When the value that is set is true, the corners are rounded. You can use getAreBarsRounded() in order to check the current value. The rounding radius can be checked and modified by using the getRoundBarsRadius() and setRoundBarsRadius(float). If you try to set a negative value, an IllegalArgumentException will be thrown. Here's an example of BarSeries when their round bar radius is set to 10: